001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 019package org.apache.hadoop.record.meta; 020 021import java.io.IOException; 022import org.apache.hadoop.classification.InterfaceAudience; 023import org.apache.hadoop.classification.InterfaceStability; 024import org.apache.hadoop.record.RecordOutput; 025 026/** 027 * Represents typeID for a Map 028 * 029 * @deprecated Replaced by <a href="https://hadoop.apache.org/avro/">Avro</a>. 030 */ 031@Deprecated 032@InterfaceAudience.Public 033@InterfaceStability.Stable 034public class MapTypeID extends TypeID { 035 036 private TypeID typeIDKey; 037 private TypeID typeIDValue; 038 039 public MapTypeID(TypeID typeIDKey, TypeID typeIDValue) { 040 super(RIOType.MAP); 041 this.typeIDKey = typeIDKey; 042 this.typeIDValue = typeIDValue; 043 } 044 045 /** 046 * get the TypeID of the map's key element 047 */ 048 public TypeID getKeyTypeID() { 049 return this.typeIDKey; 050 } 051 052 /** 053 * get the TypeID of the map's value element 054 */ 055 public TypeID getValueTypeID() { 056 return this.typeIDValue; 057 } 058 059 @Override 060 void write(RecordOutput rout, String tag) throws IOException { 061 rout.writeByte(typeVal, tag); 062 typeIDKey.write(rout, tag); 063 typeIDValue.write(rout, tag); 064 } 065 066 /** 067 * Two map typeIDs are equal if their constituent elements have the 068 * same type 069 */ 070 @Override 071 public boolean equals(Object o) { 072 if (!super.equals(o)) 073 return false; 074 075 MapTypeID mti = (MapTypeID) o; 076 077 return this.typeIDKey.equals(mti.typeIDKey) && 078 this.typeIDValue.equals(mti.typeIDValue); 079 } 080 081 /** 082 * We use a basic hashcode implementation, since this class will likely not 083 * be used as a hashmap key 084 */ 085 @Override 086 public int hashCode() { 087 return 37*17+typeIDKey.hashCode() + 37*17+typeIDValue.hashCode(); 088 } 089 090}